English:Frederick Augustus I (full name: Frederick Augustus Joseph Maria Anton Johann Nepomuk Aloys Xavier) (de:Friedrich August I.; b. Dresden, 23 December 1750 - d. Dresden, 5 May 1827) was King of Saxony (1805-1827) from the House of Wettin. He was also Elector Frederick Augustus III (Friedrich August III.) of Saxony (1763-1806) and Duke Frederick Augustus I (pl:Fryderyk August I) of Warsaw (1807-1813).